Curable composition

1. A structure, comprising:

a transparent material;

a layer having photocatalytic activity-based antistaining properties provided on a surface of the transparent material; and

a cured product provided on the layer having photocatalytic activity-based antistaining properties,

wherein the cured product is formed from a curable composition that comprises

a vinyl polymer (I) having a main chain that is a product of living radical polymerization and containing at least one crosslinkable silyl group, and

an antioxidant (II).

2. The structure according to claim 1 ,

wherein the transparent material is selected from a building material, a construction material, a material for-civil engineering material, a transportation material, or a material for automobiles.

3. The structure according to claim 2 ,

wherein the transparent material is glass, a polycarbonate, or a (meth)acrylic resin.

4. The structure according to claim 1 ,

wherein the layer having photocatalytic activity-based antistaining properties provided on the surface of the transparent material is a layer comprising a material having photocatalytic activity and further comprising a hydrophilic material.

5. The structure according to claim 1 ,

wherein the antioxidant (II) is a hindered phenol compound.

6. The structure according claim 1 ,

wherein the curable composition further comprises a plasticizer (III).

7. The structure according to claim 6 ,

wherein the plasticizer (III) is a phthalic ester.

8. The structure according to claim 6 ,

wherein the plasticizer (III) is a polyoxyalkylene polymer.

9. The structure claim 1 ,

wherein the vinyl polymer (I) has a molecular weight distribution of less than 1.8.

10. The structure according to claim 1 ,

wherein the main chain of the vinyl polymer (I) comprises a polymer of a vinyl monomer at least one selected from the group consisting of (meth)acrylic monomers, acrylonitrile monomers, aromatic vinyl monomers, fluorine-containing vinyl monomers and siliconcontaining vinyl monomers as a major component.

11. The structure according to claim 10 ,

wherein the main chain of the vinyl polymer (I) is a (meth)acrylic polymer.

12. The structure according to claim 1 ,

wherein the main chain of the vinyl polymer (I) is an acrylic polymer.

13. The structure according to claim 12 ,

wherein the main chain of the vinyl polymer (1) is an acrylic ester polymer.

14. The structure according to claim 1 ,

wherein the product of living radical polymerization as the main chain of the vinyl polymer (I) is a product of atom transfer radical polymerization.

15. The structure according to claim 14 ,

wherein the product of atom transfer radical polymerization is obtained in a presence of a transition metal complex catalyst comprising at least one element selected from the group consisting of a VII, VIII, IX, X, or XI group element in the periodic table as a central metal.

16. The structure according to claim 15 ,

wherein the transition metal complex catalyst is a complex having copper, nickel, ruthenium, or iron as a central metal.

17. The structure according to claim 16 ,

wherein the transition metal complex catalyst is a complex of copper.

18. The structure according to claim 1 ,

wherein the crosslinkable silyl group of the vinyl polymer (I) is represented by a following general formula 1:

—[Si(R 10 ) 2-b (Y) b O] I —Si(R 11 ) 3-a (Y) a   (1),

wherein R 10 and R 11 are the same or different, and each of R 10 and R 11 is independently an alkyl group containing 1 to 20 carbon atoms, an aryl group containing 6 to 20 carbon atoms, an aralkyl group containing 7 to 20 carbon atoms, or a triorganosiloxy group represented by (R′) 3 SiO— (in which R′ represents a univalent hydrocarbon group containing 1 to 20 carbon atoms and the three R′ groups may be the same or different) and, when there are two or more R 10 or R 11 groups, they may be the same or different; Y represents a hydroxyl group or a hydrolyzable group, and when there are two or more Y groups, they may be the same or different, a represents 1, 2 or 3, b represents 0, 1 or 2, and I represents an integer of 0 to 19, provided that a relation

a+I×b≧ 1

should be satisfied.

19. The structure according to claim 1 ,

wherein the crosslinkable silyl group of the vinyl polymer (I) is located at a terminus of the main chain.

20. The structure according to claim 1 ,

wherein the curable composition further comprises a polyoxyalkylene polymer (IV) comprising at least one crosslinkable silyl group in an amount in a range of 0.1 to 1,000 parts by weight per 100 parts by weight of the vinyl polymer (I).

21. The structure according to claim 1 ,

wherein the curable composition further comprises a polymer (V), which contains a crosslinkable silyl group, as a product of a radical polymerization technique, which is different from the living radical polymerization, in an amount within a range of 3 to 300 parts by weight per 100 parts by weight of the vinyl polymer (I).

22. The structure according to claim 1 ,

wherein the curable composition further comprises 0.1 to 20 parts by weight of a tin curing catalyst (VI) per 100 parts by weight of the vinyl polymer (I).

23. The structure according to claim 1 ,

wherein the layer having photocatalytic activity-based antistaining properties has a thickness of 0.01 to 10 μm.